https://stream.echo6.co/videos/watch/fa3470a2-5061-4da5-8265-96c11f6718be Premium Member Resources: https://ninjanerd.org Ninja Nerds! In this episode, Professor Zach Murphy delivers a comprehensive, high yield breakdown of Sinus Infections, building a simple but powerful framework for diagnosing and managing rhinosinusitis in real patients and on exams. We start on the whiteboard by defining rhinitis versus sinusitis, then combine them into rhinosinusitis to explain why nasal obstruction, congestion, facial pain or pressure, purulent drainage, cough, and reduced smell tend to travel together. We begin by mapping acute versus chronic rhinosinusitis and walking through the core pathophysiology that drives symptoms, including mucosal inflammation, impaired mucociliary clearance, and obstruction of sinus outflow. From there, Zach breaks down acute viral rhinosinusitis and why most cases improve with supportive care, then contrasts it with acute bacterial rhinosinusitis using the clinical patterns that matter most, persistent symptoms that do not improve, severe onset early in the course, and the classic double worsening pattern. Next, we cover acute invasive fungal rhinosinusitis, including the patient profiles that should immediately raise concern, especially diabetic ketoacidosis and immunocompromised states. You will learn the key warning signs, including rapidly progressive symptoms, tissue ischemia and necrosis, and the dangerous complications that can follow if this is missed. We then transition into chronic rhinosinusitis and explain how the approach changes when symptoms last for weeks, including the major distinction between chronic disease with nasal polyps and chronic disease without polyps. Zach connects the underlying inflammation patterns to the clinical presentation, then sets up how this impacts long term management decisions. Finally, we dedicate a high yield section to complications of rhinosinusitis and the red flags that demand urgent evaluation. This includes frontal bone osteomyelitis with Pott puffy tumor, orbital cellulitis, cavernous sinus thrombosis, and intracranial spread such as meningitis, epidural abscess, subdural empyema, and brain abscess. After the whiteboard, we build on a digital diagnostic framework that walks you step by step through diagnosis and treatment. You will learn when observation and supportive care are appropriate, when antibiotics are indicated and how to choose them, when imaging is actually useful, and when specialist referral and urgent escalation are the safest next move. Enjoy the lecture, and please support us below! Table of Contents: 0:00 Lab 0:38 Definition of Rhinosinusitis 12:30 Acute vs Chronic Rhinosinusitis 16:01 Acute Viral vs Bacterial Rhinosinusitis 40:30 Acute Fungal Rhinosinusitis 54:38 Chronic Rhinosinusitis 1:11:06 Complications of Rhinosinusitis 1:38:20 Diagnostic Approach to Sinus Infections 1:51:50 Treatment Approach to Sinus Infections 1:58:39 Comment, Like, SUBSCRIBE! 🌐 Official Links Website: https://www.ninjanerd.org Podcast: https://podcast.ninjanerd.org Store: https://merch.ninjanerd.org 📱 Social Media https://www.tiktok.com/@ninjanerdlectures https://www.instagram.com/ninjanerdlectures https://www.facebook.com/ninjanerdlectures https://x.com/ninjanerdsci/ https://www.linkedin.com/company/ninja-nerd/ 💬 Join Our Community Discord: https://discord.gg/3srTG4dngW #ninjanerd #infectiousdisease #sinusinfections Mon, 13 Apr 2026 15:19:13 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/fa3470a2-5061-4da5-8265-96c11f6718be All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.